Add master view for Units of Measure mapping table

w/ support for "collect from wild" tool

tailbone/templates/units-of-measure/index.mako

@@ -0,0 +1,66 @@
+## -*- coding: utf-8; -*-
+<%inherit file="/master/index.mako" />
+
+<%def name="grid_tools()">
+  ${parent.grid_tools()}
+
+  <b-button type="is-primary"
+            icon-pack="fas"
+            icon-left="fas fa-shopping-basket"
+            @click="showingCollectWildDialog = true">
+    Collect from the Wild
+  </b-button>
+
+  ${h.form(url('{}.collect_wild_uoms'.format(route_prefix)), ref='collect-wild-uoms-form')}
+  ${h.csrf_token(request)}
+  ${h.end_form()}
+
+  <b-modal has-modal-card
+           :active.sync="showingCollectWildDialog">
+    <div class="modal-card">
+
+      <header class="modal-card-head">
+        <p class="modal-card-title">Collect from the Wild</p>
+      </header>
+
+      <section class="modal-card-body">
+        <p>
+          This tool will query some database(s) in order to discover all UOM
+          abbreviations which currently exist in your product data.
+        </p>
+        <p>
+          Depending on how it has to go about that, this could take a minute or
+          two.&nbsp; Please be patient when running it.
+        </p>
+      </section>
+
+      <footer class="modal-card-foot">
+        <b-button @click="showingCollectWildDialog = false">
+          Cancel
+        </b-button>
+        <once-button type="is-primary"
+                     @click="collectFromWild()"
+                     icon-left="shopping-basket"
+                     text="Collect from the Wild">
+        </once-button>
+      </footer>
+
+    </div>
+  </b-modal>
+</%def>
+
+<%def name="modify_this_page_vars()">
+  ${parent.modify_this_page_vars()}
+  <script type="text/javascript">
+
+    TailboneGridData.showingCollectWildDialog = false
+
+    TailboneGrid.methods.collectFromWild = function() {
+        this.$refs['collect-wild-uoms-form'].submit()
+    }
+
+  </script>
+</%def>
+
+
+${parent.body()}

tailbone/views/uoms.py

@@ -0,0 +1,126 @@
+# -*- coding: utf-8; -*-
+################################################################################
+#
+#  Rattail -- Retail Software Framework
+#  Copyright © 2010-2021 Lance Edgar
+#
+#  This file is part of Rattail.
+#
+#  Rattail is free software: you can redistribute it and/or modify it under the
+#  terms of the GNU General Public License as published by the Free Software
+#  Foundation, either version 3 of the License, or (at your option) any later
+#  version.
+#
+#  Rattail is distributed in the hope that it will be useful, but WITHOUT ANY
+#  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+#  FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+#  details.
+#
+#  You should have received a copy of the GNU General Public License along with
+#  Rattail.  If not, see <http://www.gnu.org/licenses/>.
+#
+################################################################################
+"""
+UOM Views
+"""
+
+from __future__ import unicode_literals, absolute_import
+
+from rattail.db import model
+
+from tailbone.views import MasterView
+
+
+class UnitOfMeasureView(MasterView):
+    """
+    Master view for the UOM mappings.
+    """
+    model_class = model.UnitOfMeasure
+    route_prefix = 'uoms'
+    url_prefix = '/units-of-measure'
+    bulk_deletable = True
+    has_versions = True
+
+    labels = {
+        'sil_code': "SIL Code",
+    }
+
+    grid_columns = [
+        'abbreviation',
+        'sil_code',
+        'description',
+        'notes',
+    ]
+
+    form_fields = [
+        'abbreviation',
+        'sil_code',
+        'description',
+        'notes',
+    ]
+
+    def configure_grid(self, g):
+        super(UnitOfMeasureView, self).configure_grid(g)
+
+        g.set_renderer('description', self.render_description)
+
+        g.set_sort_defaults('abbreviation')
+
+        g.set_link('abbreviation')
+        g.set_link('description')
+
+    def configure_form(self, f):
+        super(UnitOfMeasureView, self).configure_form(f)
+
+        f.set_renderer('description', self.render_description)
+        f.set_type('notes', 'text')
+
+        if not self.creating:
+            f.set_readonly('abbreviation')
+
+        if self.creating or self.editing:
+            f.remove('description')
+            f.set_enum('sil_code', self.enum.UNIT_OF_MEASURE)
+
+    def redirect_after_create(self, uom, **kwargs):
+        return self.redirect(self.get_index_url())
+
+    def redirect_after_edit(self, uom, **kwargs):
+        return self.redirect(self.get_index_url())
+
+    def render_description(self, uom, field):
+        code = uom.sil_code
+        if code:
+            if code in self.enum.UNIT_OF_MEASURE:
+                return self.enum.UNIT_OF_MEASURE[code]
+            return "(unknown code)"
+
+    def collect_wild_uoms(self):
+        app = self.get_rattail_app()
+        handler = app.get_products_handler()
+        uoms = handler.collect_wild_uoms()
+        self.request.session.flash("All abbreviations from the wild have been added.  Now please map each to a SIL code.")
+        return self.redirect(self.get_index_url())
+
+    @classmethod
+    def defaults(cls, config):
+        cls._uom_defaults(config)
+        cls._defaults(config)
+
+    @classmethod
+    def _uom_defaults(cls, config):
+        route_prefix = cls.get_route_prefix()
+        url_prefix = cls.get_url_prefix()
+        permission_prefix = cls.get_permission_prefix()
+
+        # collect wild uoms
+        config.add_tailbone_permission(permission_prefix, '{}.collect_wild_uoms'.format(permission_prefix),
+                                       "Collect UoM abbreviations from the wild")
+        config.add_route('{}.collect_wild_uoms'.format(route_prefix), '{}/collect-wild-uoms'.format(url_prefix),
+                         request_method='POST')
+        config.add_view(cls, attr='collect_wild_uoms', route_name='{}.collect_wild_uoms'.format(route_prefix),
+                        permission='{}.collect_wild_uoms'.format(permission_prefix))
+
+
+def includeme(config):
+    UnitOfMeasureView.defaults(config)